Our NVMe SSD drives must be connected to a Thunderbolt™ 3 equipped USB-C port. On systems which have a mix of Thunderbolt™ 3 and non-Thunderbolt™ 3 USB-C ports, please ensure the device is connected to a Thunderbolt™ 3 port. Most systems with a mix of ports will have a Thunderbolt symbol next to the Thunderbolt 3 ports.